The GRBs simultaneously detected by BeppoSAX and BATSE

We used the BeppoSAX-Wide Field Cameras archive and the most updated BATSE catalog (including events non triggered on flight) to search for the GRBs that were temporally and positionally contained within the WFC field of view. We applied the WFC standard software to find any variable (unknown) X-ray source falling within the BATSE error box. As the detected sources are the best candidate X-ray counterpart of the GRBs, we extracted the light curve and the spectrum in the 3–25 keV energy range and we analyzed them jointly with the BATSE data. Our study should be able to reveal all the X ray emission episodes associated with the most classical GRBs as well as possibly dim gamma events with a much larger X-ray flux (i.e., XRF, XRR)